Assessing the confidence in pest freedom gained in the past pine wood nematode surveys

Björklund, NiklasSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology (författare)

All Member States of the European Union must conduct annual surveys of pine wood nematode (PWN) to ensure its timely detection. However, the statistical confidence of these surveys is rarely assessed. To facilitate such assessments, we developed two easy-to-use web applications: NoBaSURV-PWN for assessment of the statistical confidence of past PWN surveys, and NoBa Land Cover Retriever for retrieving the land cover data needed in the assessments. This report explains how the statistical confidence of past PWN surveys can be assessed with NoBaSURV-PWN. In addition, the reportpresents the assessments done with the NoBaSURV-PWN applicationfor Estonia, Finland, Lithuania, Norway, and Sweden. The technical details of the developed applications are presented,and some matters that have general relevance for statistical assessment and planning of quarantine pest surveys are discussed. Also, the capacity building activitiesdone in the project are described and their impact is evaluated.The assessments forthe five Nordic-Baltic countries show that, in most of the countries, PWN surveys have been extensive enough to provide evidence for facilitating tradewith a rather high confidence. Yet, the surveys have clearly not been extensive enough to ensure detection of PWN invasions at such an early stage that they could be eradicated.

Boberg, JohannaSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig mykologi och växtpatologi,Department of Forest Mycology and Plant Pathology(Swepub:slu)49560 (författare)
Sveriges lantbruksuniversitetInstitutionen för ekologi (creator_code:org_t)
Sveriges lantbruksuniversitet

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